KCl can be used in salt bridge as an ele...

` KCl` can be used in salt bridge as an electrolyte in which of the following cells ?

A

`Zn| ZnCl_2 ||AgNO_3 |Ag`

B

`Pb|Pb(NO_3)_2 ||Cu (NO_3)_2|Cu`

C

` CU|CuSO_4||AuCl_3|Au`

D

` Fe|FeSO_4||Pb(NO_3)_2)|Pb`

Text Solution

Verified by Experts

The correct Answer is:

C

KCl can make pereiptiate with ` AgNO_3, Pb(NO_3)_2` so can`t be used along these electrolytes.

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KCl can be use in salt bridge.

Asseration : Salts like KCl,KNO_3 i.e., inert electrolytes are used in salt bridge. Reason : An inert electrolyte can easily be filled in the U-tube.

Knowledge Check

A salt bridge.

A

allows the flow of current by completing the electrical circuit

B

allows easy intermixing of the lons in the two half cells.

C

eliminates liquid junction potential

D

maintains the electrical neutrality of the two half cells.

KCl is used in salt bridge because:

A

It forms a good jelly with agar-agar

B

It is a strong electrolyte

C

It is a good conductor of electricity

D

Migration factor of `K^(+) and Cl^(-)` ions are almost equal

Salt bridge is used to

A

connect two half cells

B

maintain electrical neutrally

C

reduced junction potential

D

all

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